Recent Posts

Pages: 1 ... 8 9 [10]

Tech Talk / Re: 1980 RM 400 fouling plugs

« Last post by John Orchard on June 12, 2024, 11:49:10 am »

Probably not your oil/fuel mix, more the fuel/air mix :-)

Tech Talk / 1980 RM 400 fouling plugs

« Last post by maxi81 on June 11, 2024, 08:11:45 pm »

I was at Classic Weekend this past weekend and fouled a plug each day. I got talking to a guy that hangs around Geoff Ballard and he told me I should be running the bike at 40:1 and use Motul oil which might help with the fouling?? Currently run the bike at 32:1 using Castrol TTS. Getting confusing as I'm getting told lots of different info.

Tech Talk / Re: Circlip on countershaft

« Last post by maxi81 on June 11, 2024, 08:04:57 pm »

Thanks for the replies. Have found a nut.

Tech Talk / Re: Circlip on countershaft

« Last post by John Orchard on June 11, 2024, 07:00:28 pm »

If it has a nut, most surely the countershaft needs to be pulled hard to that side by the nut, so that all the gears sit in the correct position.

Tech Talk / Re: Circlip on countershaft

« Last post by pokey on June 11, 2024, 04:16:24 pm »

Just a circlip? err noo. A bit of frame of swingarm flex and you have a hell of a lot of side load on that circlip and ....Pop bang, cue the tears as cases dont like a shaft being jammed at 8000RPM.

09140-22006 is used on a few bikes including the rear axles

Nothing that special about it and you can still get the slotted washer ex suzuki.

Tech Talk / Re: Circlip on countershaft

« Last post by PeterC on June 11, 2024, 08:38:24 am »

If the workshop manual, showd the front sprocket being held on by a nut (most adult sized bikes use a nut and lock tab), you should definately use the nut. A motorcycle dealer shouks stock a nut. Allowing the sprocket to move or come loose can lead to catastrophic faikure if - engine cases and or sprocket shaft. I would strongly recommend following the factory fastening system.

Tech Talk / Circlip on countershaft

« Last post by maxi81 on June 10, 2024, 08:06:39 pm »

Is it alright if the front sprocket is held on by a circlip instead of the nut? Just noticed this on my RM 400 when I've come to replace the countershaft seal. The nut seems hard to find these days which is why I think it's there instead of the nut when it was rebuilt.